Improvement in vulcanizing apparatus for dentists



UNITED STATES PATENT OFFICE.

HORACE M. EDSON, OF TOLEDO, OHIO.

IMPROVEMENT IN VULCANIZING APPARATUS FOR DENTISTS.

Specification forming part of Letters Patent No. 163,755, dated May 25,1875 application filed June 3, 1874.

To all whom it may concern Be it known that I, HORACE M. EDSON, ofToledo, in the county of Lucas and in the State of Ohio, have inventedcertain new and useful Improvements in Closing Vulcanizing Flasks orMolds; and do hereby declare that the following is a full, clear, andexact description thereof, reference being had to the accompanyingdrawings, and to the letters of reference marked thereon, making a partof this specification. Y

The nature of my invention consists in a peculiar mode of closing flasksin vulcanizingmachines, as will be hereinafter described.

In the annexed drawings, which represent a side view, a section, and aplan view, of my invention, A represents the top of a steamboiler. Theboiler is made in the usual way, and this cover or top A is secured onsteamtight in any suitable manner. B B represent two rods, which passthrough stuffing-boxes G G on the cover, and into the steam-space of theboiler. These rods pass down and connect to an annular or other suitablebase, 0, at their lower ends, and at their upper ends they are connectedby a cross-bar, D. A

screw-rod, E, passes through the cross-bar D, in which is a suitablefemale screw, and'rests at its lower end against the cover A. Ahandwheel is formed on the upper end of the screwrod, for the purpose ofoperating the same. F represent the flasks which contain the material,and which are placed upon the base 0.

When they are to be closed the screw E is operated by means of itshand-wheel, which draws up the bar D, the rods B B, and, consequently,the base 0, which forces the top of the flask against the under side ofthe cover A, and thus closes it.

The flasks are, by this arrangement, placed upon a flat base, and closedagainst a flat surface and between two parallel surfaces, making thework even and equal in its proportions.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

The combination, with the cover A, of the boiler and stuffing-boxes G G,the rods B B, base 0, cross-bar D, and screw E, whereby the flasks onthe base are drawn upward against the under side of the cover,substantially as set forth.

In testimony that I claim the foregoing, I have hereunto set my hand andseal this 21st day of May, A. D. 1874.

HORACE M. EDSON. Witnesses:

DESAULT B. KIRK, GEO. W. LIPsooMBE.

